EP 0282956 A3 19890426 - CONTAINER PUMP
Title (en)
CONTAINER PUMP
Publication
Application
Priority
- DE 3708496 A 19870316
- DE 3718325 A 19870601
Abstract (en)
[origin: EP0282956A2] The container pump has a sliding sleeve (13) at the bottom end of its housing shell (5), which in the open position frees the inlet apertures (11) at the bottom end of the housing shell (5) and in the closed position, in which it is applied against a base plate (12), closes these inlet apertures. The base plate (12) projects in a radial direction beyond the housing shell (5), thereby sealing the pump off from below. Fluid can thereby be admitted only via the inlet apertures provided on the circumference of the pump's housing shell (5). Displacement of the sliding sleeve (13) is achieved by the provision of thrust pieces (19) on the underside of the sliding sleeve, which in the closed position project downwards beyond the base plate (12) and when the pump is switched on are forced upward against the action of a spring (15) loading the sliding sleeve (13) owing to the downward acting weight of the pump, as a result of which the sliding sleeve (13) is released from its sealing seat on the base plate (12) thereby permitting the entrance of fluid through the inlet apertures (11). When the pump lifts, the sliding sleeve (13) is forced back into its closed position by the spring (15). The sliding sleeve can also be operated manually by an operating device. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 13/08 (2006.01); F04D 15/00 (2006.01); F04D 29/70 (2006.01)
CPC (source: EP US)
F04D 13/08 (2013.01 - EP US); F04D 15/0005 (2013.01 - EP US)
Citation (search report)
- [AD] DE 3412873 A1 19851017 - LUTZ FA KARL [DE]
- [A] US 1890683 A 19321213 - HUGHES OWEN J
- [A] PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 267 (M-343)[[704], 7. Dezember 1984; & JP-A-59 138 793 (HITACHI SEISAKUSHO K.K.) 09-08-1984
- [A] PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 127 (M-83)[799], 15. August 1981; & JP-A-56 064 192 (HITACHI SEISAKUSHO K.K.) 01-06-1981
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0282956 A2 19880921; EP 0282956 A3 19890426; EP 0282956 B1 19910529; EP 0282956 B2 19960501; DE 3718325 A1 19881013; DE 3718325 C2 19890119; DE 3862959 D1 19910704; ES 2022940 B3 19911216; ES 2022940 T5 19961001; JP S6415500 A 19890119; US 4909704 A 19900320
DOCDB simple family (application)
EP 88104035 A 19880314; DE 3718325 A 19870601; DE 3862959 T 19880314; ES 88104035 T 19880314; JP 6465988 A 19880316; US 16672088 A 19880311